President Trump stayed silent on social media during former FBI Director James Comey's testimony Thursday, but his son Donald Jr. was firing off tweets as soon as the hearing began, jumping to his father's defense.

He called his father's actions "very far from any kind of coercion or influence and certainly not obstruction!" and trolled Comey for suggesting that the President had ordered him to drop an investigation into former National Security Adviser Michael Flynn.

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"Knowing my father for 39 years when he 'orders or tells' you to do something there is no ambiguity, you will know exactly what he means," Donald Trump Jr. wrote.

America watches as Comey testifies

Trump Jr. also resurfaced one of his father's tweets from April, after Comey revealed he orchestrated the leak of information in hopes that it might lead to the appointment of a special prosecutor to lead the Russia investigation.

"The real story turns out to be SURVEILLANCE and LEAKING! Find the leakers," Trump said in the April tweet.